
/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 *版权所有2002-2016原作者。
 *
 *根据Apache许可证2.0版（“许可证”）获得许可；
 *除非符合许可证，否则不得使用此文件。
 *您可以在以下地址获取许可证副本：
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 *除非适用法律要求或书面同意，软件
 *根据许可证分发的内容是按“原样”分发的，
 *无任何明示或暗示的保证或条件。
 *有关管理权限和
 *许可证下的限制。
 */

package org.aopalliance.intercept;

import javax.annotation.Nonnull;

/**
 * Intercepts the construction of a new object.
 *
 * <p>The user should implement the {@link
 * #construct(ConstructorInvocation)} method to modify the original
 * behavior. E.g. the following class implements a singleton
 * interceptor (allows only one unique instance for the intercepted
 * class):
 *
 * <pre class=code>
 * class DebuggingInterceptor implements ConstructorInterceptor {
 *   Object instance=null;
 *
 *   Object construct(ConstructorInvocation i) throws Throwable {
 *     if(instance==null) {
 *       return instance=i.proceed();
 *     } else {
 *       throw new Exception("singleton does not allow multiple instance");
 *     }
 *   }
 * }
 * </pre>
 *
 * @author Rod Johnson
 */
/**
 *拦截新对象的构造。
 *
 *＜p＞用户应该实现｛@链接
 *#construct（ConstructorInvocation）}方法来修改原始
 *行为。例如，以下类实现了单例
 *拦截器（只允许一个被拦截的唯一实例
 *等级）：
 *
 *<pre-class=代码>
 *类DebuggingInterceptor实现ConstructorInterceptor{
 *对象实例=空；
 *
 *对象构造（ConstructorInvocation i）抛出抛出{
 *if（实例==null）{
 *return instance=i.proceed（）；
 *}其他{
 *抛出新异常（“singleton不允许多个实例”）；
 *     }
 *   }
 * }
 *</pre>
 *
 *@作者Rod Johnson
 */
public interface ConstructorInterceptor extends Interceptor  {

	/**
	 * Implement this method to perform extra treatments before and
	 * after the construction of a new object. Polite implementations
	 * would certainly like to invoke {@link Joinpoint#proceed()}.
	 * @param invocation the construction joinpoint
	 * @return the newly created object, which is also the result of
	 * the call to {@link Joinpoint#proceed()}; might be replaced by
	 * the interceptor
	 * @throws Throwable if the interceptors or the target object
	 * throws an exception
	 */
	/**
	 *实施此方法以在和之前执行额外处理
	 *在构建新对象之后。礼貌的实施
	 *当然要调用｛@link Joinpoint#proceed（）｝。
	 *@param调用构造连接点
	 *@return新创建的对象，这也是
	 *对｛@link Joinpoint#proceed（）｝的调用；可能被替换为
	 *拦截器
	 *@throws如果拦截器或目标对象
	 *引发异常
	 */
	@Nonnull
	Object construct(ConstructorInvocation invocation) throws Throwable;

}
